// custom-tab-bar/index.js
import {storeBindingsBehavior} from 'mobx-miniprogram-bindings'
import {store} from '../store/store'
Component({
  //组建之间共享数据
  behaviors:[storeBindingsBehavior],
  storeBindings:{
      //数据源
      store,
      fields:{
        sum:'sum',
        active: 'tabbarActiveIndex',
      },
      actions:{
        updateActive:'updateTabbarActiveIndex'
      }
  },
  //监听数据变化
  observers:{
    'sum':function(val){
      this.setData({
        'list[1].info':val
      });
    }
  },
  options:{
    styleIsolation:'shared'
  },
  /**
   * 组件的属性列表
   */
  properties: {

  },

  /**
   * 组件的初始数据
   */
  data: {

    "list": [
      {
        "pagePath": "/pages/home/home",
        "text": "首页",
        "iconPath": "/images/tabs/home.png",
        "selectedIconPath": "/images/tabs/home-active.png"
      },
      {
        "pagePath": "/pages/message/message",
        "text": "消息",
        "iconPath": "/images/tabs/message.png",
        "selectedIconPath": "/images/tabs/message-active.png",
        "info":0
      },
      {
        "pagePath": "/pages/contact/contact",
        "text": "联系我们",
        "iconPath": "/images/tabs/contact.png",
        "selectedIconPath": "/images/tabs/contact-active.png"
      }
    ]
  },

  /**
   * 组件的方法列表
   */
  methods: {
    onChange(event) {
      // event.detail 的值为当前选中项的索引
      this.updateActive(event.detail);
      wx.switchTab({
        url: this.data.list[event.detail].pagePath,
      })
    },
  }
})